My project use manual reference counting and crash with UIAlertController when touch to Action Button: UIAlertController alert = [[UIAlertController alertControllerWithTitle:@"fsđs" message:@"fsđs" preferredStyle:UIAlertControllerStyleAlert ]autorelease]; UIAlertAction actionOk = [UIAlertAction actionWithTitle:@"Ok" style:UIAlertActionStyleDefault handler:nil]; [alert addAction:actionOk]; [self.window.rootViewController presentViewController:alert animated:YES completion:^{ }];